Feed-pump regulator.



R. F. HALLIWELL.

FEED PUMP REGULATR.

APPLICATION mm Nov/.10. 191e.

imma Dee. 18,1917.

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3o l f matic view oa turbine driven pump Vprof elasticiuid .turbine 'supplied with motive 40 o l n n i through a suction pipe 7 and delivers it into lineman FRANCIS HALnLWEnI-i. prender., (ENGLAND. ,essrenoe To GENERAL- FggpnU-itri RnGULATon. Y

To all whom z'timafy/ concern: .i

Be it known `that 1,' REGINA@ FRANCIS HALLIWELL, a subject 'of the :King ofGreat.

Britain, residing at Rugby, vin' the county of arvviclrsliirm England, have invented i certain nen7 and useful Improvements in Feed-Pump Regulators, of v vjhieh *the following is a specification. I Y

They present inventlonjrelates. to regulators `for controlling the amount of Wateror u other yHuid delivered to aboiler 0r the "like by .a pump driven bv-a prime mOi/quench, for example, as anv elastic-Huidturbme. Aln such installations it is customaryv to regulate the apparatus by regulating the elasticgluid delivered to the primemovcrso `thatit will drive `the pump atawspeedto maintain the desired iiuid pressure on thedeliverygside ofthe pump, and the object of thefpresent invention. Lis to provide an improvedreguf lator for this purpose. specificationl have described myv vinvention as applied to a pump supplying. Water to a steamboiler but it will be undcrstood'that itis not necessarily limitedthereto.

For a 'consideration of What-Ibelieveto be novel and my invention, attention :is Adirected to the accompanying speeiticationand they claims appended thereto.

In the drawing. Figure 1 is a diagram? videdwith my improved regulatonand Fig. 2 yis an enlargedvsectional elevation of the regulater.V

. Heter-ring,` to

the drawing. ,3 indicates an Y fluid, as steam. from apipe 4the motive fluid exhausting through an outletyv Mounted on the end of. theturlnneshattl 1s a centrifugal pump .6 which draws water actuated byy an operating ,motor llfncen? ec'tion being made't'o the Water pressure in In the following l .Specificatie News niet lrateatedne.18.1917; Applicationielovemberlmwl. seriaiNo. 130,663. i 1

the delivery main `through the pipe 12 and i y to the steam pressure in `the steam supply main: z'. e., 4inthe` boiler through the pipe 13. .lYastewater from the, operating cylin.'

deris ledthroughthe `pipe 'lland may be connected to the suction-side ofthe pump or other convenient' plac'providing a :free

Waste. Water outlet, 14. The Vflower end lof thijs vpassa ge canbeclosed byf a valve vformed onlfthefend of a .plunger 19'sliding in rat` cylindrical portion'v 26T-off the.- cover'QOe'. Asshown 'clearly in.Fig.-2, the pistonfl*V fits loosely `i-n the operatingcvlinder so that there `is `a constant `small*leakage :ofjivater P3513. it. .lVatervr under the' 'delivery main sie` pressure isadmittedthrough the pipe '1 2 i into the annular space: above the pistonsnr.- rounding the piston:A 16?. The space below the plunger-19 is 'in communication'with the steam pressure'through the pipe' '1` 3; fIt

l.iv-ill' be :seen that in .order-to obtain''v equi# libriumythe pressure abovethe piston 16@` must-A -beto sonie.1extenthigli er thanthe pressure beneath the. pistonzdepending on the area ot the piston rod-17: 'also it Willdie seen that the pressure beneathfthepiston 16e must be .approximately the saine as the steam pressure to maintain the plunger 19 lin equilibrium. Since there is'a 'constant leaka'ge past the `piston 16a. itrivill be seen that the valveon the `plunger z19v mustbef ay certain small distance otl'f'its seat iff'emiilibriumi's to be maintained. Assumingthat thepressure in the 4delivery main' rises. theiniston 16a ivi-ll be forced downward: thus closing the-:passage 1S. T his'` "causes the'pressure beneaththe piston to build up.l withthe effeet ,thatf the plunger l'19 yis pressed'do'ivn-y Y Ward so as to restorethe Aopening tn passa ge f 18 to theiamount necessary? to' 'reestablish equilibrium. 1The movementd'ovnivard of the pistonLlGav willclose the steamivalxfe l0, thus reducing thespeed ot' the tui-bineflsutii.-l

eiently'toestere the pressure in the delivery.

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main V8 tothe proper amount. This action Y is continuous and similar over the whole stroke ofthe operating piston, as', whatever the position of the piston` 16a may be, it ivill always tend to move downward and shut off steam if the pressure in the delivery main is greater than the desired proportionate amount above the steam pressure. Will be seen that the action of the Agear is similar when moving in an opposite direction if thewater pressure is reduced. In this'case, if the piston 16a rises following a reduction in Water pressure, the pressure Vin the space beneath the piston 16aL would tend to fall. causing the plunger-19 to rise and Y again throttle the passage 18 to the amount necessary to pass the'leaka'ge.

In accordance with the provisions of the patent statutes, I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is only illustrative, and that the invention can be 4carried-out by other means.

lVhat I claim as new and desire to secure by Letters Patent of the United States, is,-

-1. The combination of a pump, a prime mover for driving it. a receptacle to which the pump delivers fluid. a valve mechanism for regulating the supply of operating fluid to thepriine mover. and means for controlling` the valve mechanism comprising a movable abutment subjected to the pressure of the fluid delivered by the pump, means forming an escape opening through which Huid may escape from said abutment, and a valve mechanism in said escape opening which is controlled by the pressure in the receptacle. 'v :2. The combination of a pump, a prime mover for driving it, a boiler to which the pump delivers fluid. a lvalve mechanism for regulating the supply of operating fluid to the prime mover. and means for controlling the valve mechanism, comprising a cylinder, a piston therein.Y a stem on the piston connected to the valve mechanism. a pipe for supplying fluid under pressure from the delivery side of the pump tothe cylinder, said piston having a passage through which such fluid may escape, a valve controlling the passage,and means subjected to the pressure in the boiler for regulating said valve.

3. In an apparatus of the character described. the combination of a cylinder having a piston therein, said cylinder having an admission opening on one side of the piston, and said piston having an escape passage, and a plunger having a valve head for regulating the escape passagesaid piston and plunger being each movable relative to the .for supplyingfiuid thereto, a primel mover for driving lthe pump, and .a Vvalve' gear for regulating the admission `of motive liuid to the ,prime mover, Vof a pressure kregulator forthe valve gear comprising a cylinder having a piston therein, said cylinder having an admission openingV connected With the delivery` side of the pump and said piston having an escape opening therein, a second cylinder connected with the first, aV plunger therein having a valvehead which regulates the floiv of fiuid throughsaid escape opening, and a pipe connecting the second cylinder to the boiler so that the plunger is subiected to the pressure therein. 5. The combination With a boiler, a'pump for supplying fluid thereto. aiprime mover for driving the pump, and a valvemechanism for regulating the admission'of motive Y fluidto the prime mover. of a pressure regulator forthe valve mechanism comprising. a cylinder having a. piston looselv fitted therein. said cylinderqliaving an admission opening on one side of' kthe pistonl connected with the delivery side of the pump. and said piston having an escape opening through which the cvlinder on the other side of the piston is connected to a region of lower pressure. a second cylinder adjacent the first. a plunger therein having a valve head which regulates the flow of tluidthrough the passage in the piston. and a pipe connecting the second cylinder to the boiler so that the plunger is subjected to the pressure therein.l ,Y j l 6."l`lie combination of a pump, a prime mover for driving it. a receptacle togwliich 4. The combination witha boiler, `a pump the pump delivers Huid. a valve mechanism .c i

forregulating the supply ofV operating fluid to the prime mover. and means for-controlling said valve mechanism comprising a movable abutment siihi'ected to the pressure of the fluid delivered bv the pump. means :Forming -an* escape opening through which fluid mav escapefrom said, abutment. and a valve mechanism lcomprising relatively mov- 7. -Tlie combination of a pump` aprime moverv for driving it. a boiler to which the pump delivers fluid. a valve kmechanism for regulating the supply of' operating fluid to the prime mover. and meansfor Vcontrolling the valve mechanism.V comprisingr a cylinder, a piston therein, a

stem on the piston connected to the valve mechanism, there being a passage of restricted area connecting the tivo ends of the cylinder on opposite sides of the piston, ai

which it may escape to the other side therey of through said passage of restricted area,

a discharge conduit communicating With the cylinder on such other vside of the piston, and Valve mechanism controlled by the pressure in said boiler and by the delivery pressure of the pump for regulating the area of i,

said discharge conduit.

In Witness whereof, I have hereunto set my hand this thirteenth day of October, 1916.

Witnesses: p

CHARLES H. FULLER, JOHN HALFORD? copies of this patent may be obtained for ilve cents each, by addressing the Commissioner of Patents;v Y Washington, D. C.

REGINALD FRANCIS'HALLIWELL. 

